term.lua

local chest = peripheral.wrap("front")
local query = nil

rednet.open("bottom")

function io()
  if query == nil then
    return
  end

  -- Pipe matching items towards player
  local chest_items = chest.list()
  if chest_items ~= nil then
    for slot, item in pairs(chest_items) do
      if string.find(item.name, query) then
        turtle.select(1)
        turtle.suck()
      end

      break
    end
  end
end

function empty_garbage()
  -- Pipe non-matching items away from player
  for i=1, 16 do
    turtle.select(i)

    itemDetail = turtle.getItemDetail()

    if query == nil or (itemDetail ~= nil and not string.find(itemDetail.name, query)) then
      turtle.drop()
    end
  end

  turtle.select(1)
end

local query_input = ""

local width, height = term.getSize()

while true do
  term.setCursorPos(1, height)
  term.clearLine()
  term.write("> " .. query_input)

  os.startTimer(1)

  local eventData = { os.pullEvent() }
  local event = eventData[1]

  if event == "key" then
    local key = eventData[2]

    if key == 257 then
      if string.len(query_input) > 0 then
        query = query_input

        rednet.broadcast(query)

        empty_garbage()
        query_input = ""
      end
    elseif key == 259 then
      query_input = string.sub(query_input, 1, -2)
    elseif key >= 39 and key <= 126 then
      query_input = query_input .. string.char(key)
    end
  end

  io();
end